Collaborate Disseminate
Some coffee snobs might call this sacrilege. Cold brew is supposed to take a long time — that’s part of how it gets its characteristic smoothness. But a group of …read more Continue reading Much Faster Cold Brew Through Cavitation
We know what you’re thinking: with so many wireless modules available for just pennies, trying to create a physical data link using ultrasonic transducers like [Damian Bonicatto] did for a …read more Continue reading Skip the Radio with This Software-Defined Ultrasound Data Link
While ultrasonic cleaning might sound a bit like the “sonic shower” from Star Trek, this is actually one case where the futuristic-sounding technology predates its use in Sci-Fi. Ultrasonic cleaners …read more Continue reading Converting a Sink to an Ultrasonic Cleaner
The microphone is a pretty ubiquitous piece of technology that we’re all familiar with, but what if you’re not looking to record audio in the air, and instead want to …read more Continue reading DIY Hydrophone Listens in on the Deep for Cheap
The evolution of computer graphics is something that has been well documented over the years, and it’s a topic that we always enjoy revisiting with our retrocomputing readers. To wit, …read more Continue reading VCF East 2021: The Early Evolution of Personal Computer Graphics
To say that the ocean is a dynamic environment would be a gross understatement, especially when coastlines are involved. Waves crash, tides go in and out, and countless variables make …read more Continue reading Surf Sensor Adds Depth To Finding The Ultimate Wave
Ah, the humble neon lamp. The familiar warm orange glow has graced the decks of many a DIY timepiece, sometimes in a purely indicating duty, and sometimes forming a memory …read more Continue reading The Humble NE-2 Neon Lamp Has A New Trick
The spooky season is upon us, and with it the race to come up with the geekiest way to scare the kids. Motion-activated jump-scare setups are always a crowd-pleaser, but …read more Continue reading Ultrasonic Array Powers This Halloween Spirit Writer
Carbohydrate foams derived from dead trees are not the first material that springs to mind when considering building audio equipment. But really, there’s no reason not to explore new materials …read more Continue reading Wooden You Love to Build a Ribbon Microphone?
Some cool-mist humidifiers work by flinging water at a vaporizer, but our favorite kind uses a piezoelectric transducer. These work by using high-frequency sound waves to pound the surface of the water with mechanical energy. That energy introduces standing waves that force the water to break apart into a fine …read more